This trick adds a “Scan with Windows Defender” option to the context menu that appears when you right-click a folder. It works similarly to the “Scan with Microsoft Security Essentials” option on previous versions of Windows.

Unfortunately, there is no command that launches Windows Defender in graphical mode and initiates a scan, so we will have to launch Windows Defender in a Command Prompt window.

Option 1: Download and Run a .reg File

You can add this option to your registry by downloading and running the file below. This will do everything for you – just download the .zip file, open it, and double-click the AddWindowsDefenderToContextMenu.reg file it contains.

When you use the option, you will see the scan happen in a Command Prompt window. You will only be alerted if a problem is found. If the scan is very quick, you will see a Command Prompt window appear and disappear quickly. If a problem is found, the window will alert you instead of closing